Looks like you need to be double jointed to use that contraption. Who holds a camera like that?

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The 10% Rule:You Must Be 10% Smarter Than The Equipment You're Operating

Those fingers are two close to the lens barrel.

I think the JB Design grip is much much better as a cheap grip. If you can afford the E-M5, you should be able to afford this $46 grip. Much more comfortable. The edges are slightly sharp, but 15 minutes of work using a very fine file or sandpaper will fix them.

Soon, there should be some cheaper version similar to the JB one, but much cheaper, made in China.